ARKvette02
Well-known member
Most of the time I agree with you, but this time I dont. Be as it may.... Lucas is not something I would add to a C-5, but you cant call it snake oil. It is the best thing for a Big diesel with mega miles. I use it in my pete and get 10 pounds more oil pressure at an idol . I just rebuilt my motor 30,000 miles ago, it had 1.6 million miles on it and my mechanic told me that it didnt even need it.Lucas oil stabilizer is pure "snake oil". It's nothing more than a way to get you to give money to Lucas Oil for a worthless product.
Ok....it's "worthless" as long as you use a good engine oil.
Don't listen to "quick lube" franchises either. Most of them know how to sell oil and service but don't actually know much about oil and service.
As for the question that led this thread...
The "best" oil to use in a C5 engine regardless of price is Red Line 10W30.
The best to use if price is an important limitation is Mobil 1 10W30
Both of these are great engine oil products. There is absolutely no need to use any additive, Lucas or otherwise, with them.